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A little about X-ray imaging

A little about X-ray imaging . Principle and operation Safety Food and Fiber Sensing Lab University of Georgia. What’s X-ray. X rays are a form of electromagnetic radiation. X rays are capable of traveling long distances through most other materials. What’s radiation.

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A little about X-ray imaging

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  1. A little about X-ray imaging Principle and operation Safety Food and Fiber Sensing Lab University of Georgia

  2. What’s X-ray X rays are a form of electromagnetic radiation. X rays are capable of traveling long distances through most other materials.

  3. What’s radiation Radiation is energy in the form of waves or particles. Radiation high enough in energy to cause ionization is called ionizing radiation. Radiation includes particles and rays given off by radioactive material, stars, and high-voltage equipment.

  4. Discovery Wilhelm Conrad Röntgen Discovery of X-Rays November 1895, Würzburg

  5. X-ray Tube An x-ray tube requires a source of electrons, a means to accelerate the electrons, and a target to stop the high-speed electrons.

  6. Basic principle

  7. Schematic of our machine

  8. Research scheme X-rays are used for non-destructive testing and has applications in a wide range of industries. Onion Pineapple Apple wheat

  9. Safety operation - X-Ray dermatitis Risk = Dose * Risk probability

  10. Risk in terms of Chest X-ray Chest X-ray: 20 mrem at skin, 1-2 mrem at exit. (rem = roentgen-equivalent –man). Equivalent cancer risk: Skin : 15 shots /year Internal organs: 100-150 shots /year Convert to our machine Internal: A single chest X-ray ≈ 10-50 inspections Surface leakage: A single chest X-ray ≈ 1000+ inspections

  11. Causes of Exposure Using X-ray machine Putting fingers/hand in X-ray beam to change sample Aligning X-ray beam inappropriately Modification of shielding Failure to realize X-rays are emitted from several ports Failure to read & follow manufacturers X-ray operating instructions

  12. Georgia Rulesand Regulations Georgia Rules and Regulations for RADIOACTIVE MATERIALS Chapter 391-3-17 480 pages

  13. UGA Radiation Safety The UGA radiation safety program http://www.esd.uga.edu/rad/ UGA Radiation Safety Manual http://www.esd.uga.edu/rad/manual.htm Registration, lab procedure, training, sign, counting instrument, etc.

  14. UGA training materials ftp://public@10.18.249.156/UGA%20radiation%20safety%20training Module 0, "ORIENTATION" Module 1, "BASIC RADIATION PRINCIPLES" Module 2, "SAFETY AND RADIATION" Module 3, "UGA SITE SPECIFIC PROCEDURES"

  15. Lab safety issues Never sit or stand on the convey belt of the x-ray machine, even it is not operated! (from manual) Don’t stand by the machine when it is operated! Know the differences between the radiation and contamination. Self-Protection. Radiation Protection - Time, Distance, Shielding

  16. Glove Know how to remove your gloves without touchingyour skin or clothing!

  17. Thanks Thanks for your attention! & Be safe on X-ray

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